Muhammad al-Qa'im bi-Amr Allah

Muhammad al-Qa'im was the son and co-ruler of Ubayd Allah al-Mahdi. Succeeding to the caliphate in 934 AD, his reign was tested to its limits by the massive Kharijite rebellion led by Abu Yazid ('The Man on the Donkey'), which swept across North Africa, burning Kairouan and Raqqada.

With all of Tunisia lost except the fortified peninsula of Mahdia, al-Qa'im retreated behind its massive seaward walls. He organized relentless naval supply convoys and repelled repeated assaults against the monumental gate of Skifa Kahla before dying inside the besieged city in May 946 AD, leaving his son al-Mansur to break the siege.